M
- Mexico--Gulf Coast. (1)
- Mexico--Maps, Manuscript--Early works to 1800. (1)
- Mexico. (4)
- Minnesota River--Maps--Early works to 1800. (1)
- Mississippi River Region--Maps, Manuscript--Early works to 1800. (2)
- Mississippi River Region--Maps, Manuscript. (3)
- Mississippi River Region--Maps. (4)
- Mississippi River Valley--Description and travel. (1)
- Mississippi River Valley--Maps, Manuscript--Early works to 1800. (1)
- Mississippi River Valley--Maps--Early works to 1800. (3)
- Mississippi River Valley--Maps. (5)
- Mississippi River--Maps, Manuscript--Early works to 1800. (4)
- Mississippi River--Maps--Early works to 1800. (9)
- Mississippi River--Maps. (7)
- Mississippi River. (15)
- Mississippi--Maps, Manuscript--Early works to 1800. (3)
- Missouri River Region--Maps, Manuscript. (1)
- Missouri River Valley--Description and travel. (1)
- Missouri River Valley--Maps. (1)
- Missouri River Watershed--Maps, Manuscript--Early works to 1800. (1)
- Missouri River--Maps, Manuscript. (1)
- Missouri River--Maps. (3)